Released on the 1965 album Help!, "Another Girl" stands as a quintessential example of The Beatles' early pop-rock sound. Written by John Lennon and credited to Lennon-McCartney, the track features the band's signature harmonies and a driving rhythm section that defined their mid-1960s era. The song explores themes of romantic infidelity and the complexities of relationships, delivered with the polished production characteristic of their Hamburg and London recording sessions. As a staple of their discography, it showcases the group's ability to blend catchy melodies with socially relevant lyrics, cementing their status as pioneers of the British Invasion.